The researchers then put mice injected with ghrelin and control mice through a maze and other intelligence tests. In each case, the biochemically âhungryâ mice â mice infused with ghrelin â performed notably better than those with normal levels of the hormone. The finding was startling, but âit makes sense,â Horvath says. âWhen you are hungry, you need to focus your entire system on finding food in the environment.â In fact, some biologists believe that human intelligence itself evolved because it made early hominids more effective hunters, gathers and foragers.
TeleTax: 1-800-829-4477 - Has recorded tax information and automated refund information. call this number if you just want to hear information and not talk to a person. IRS Business Assistance: 1-800-829-4933 - Call this number if you want to talk to an agent about your business, not your personal taxes.
Business Taxpayer IRS Phone Numberâ 1-800-829-4933 â This number again can be used to address some of the same examples given above with the individual taxpayer line.However, this is solely for businesses.perational Hours: This number is valid from 7am to 10pm within your local time zone. IRS Phone Number for Taxpayers Living Abroad (International) â If you are calling about an issue with filing electronically contact the Austin Office at 512-416-7550 (7am to 6pm CST)..